Achillea atrata L. Deu.: Schwarze Schafgarbe, Hallers Schafgarbe, Schwarzrandige Schafgarbe.
Classic texts: King's 1898.
Classic texts: Hool 1922.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.